HYDRO31080

• Permit No: C1981028
• IBM Index Class Name: Hydrology
• Doc Date: 1/10/2003
• Doc Name: 4th Quarter 2002 Sedimentation Pond Inspection Report Review Memo
• From: Byron Walker
• To: File
• Permit Index Doc Type: Sediment Pond Inspections
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
1313 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
FAx: [phone]
Interoffice MEMORANDUM
to: File C-81-028, Keenesburg, Pond Inspections
from: Byron G. Walker
subject: Review of Sedimentation Pond Inspection Report, 4th Quarter 2002
date: January 10, 2003
This review is conducted to determine compliance with Rules 4.05.9(17}.
DIVISION OF
MINERALS
GEOLOGY
RECLAMA710N
MINING•SAFETY
Bill Owens
Governor
Greg E. Walther
Executive Director
Ronald W. Cattany
Acting Division Director
Reports aze to be submitted quarterly. The subject report was submitted on December 16, 2002,
combined with the Annual Report, and received at the Division on December 23, 2002. That the
report was a combined report was confirmed with the operator (an amendment to the report was
received January 9, 2003).
Rule 4.05.9(14) All impoundments shall be inspected by a qualified registeredprofessional engineer
or other qual fed professional specialist under the direction of a professional engineer. The
professional engineer or specialist shall be experienced in the construction of impoundments.
The inspection was performed by an authorized (qualified) professional specialist under the direction
of a professional engineer (John A. Schallenkamp, see cover letters}.
Rule 4.05.9(17) All impoundments shall be examined at least quarterly`, by a qualified person2
designated by the operator, for appearance ofstructural wealmess3 and other hazardous conditions4.
The reports shall be retained at or near the mine site, and a copy of the report shall be submitted to
the Division on a quarterly basis, or other approved submittal frequency.
1 This is a combined yeazly and quarterly report.
2 The qualified person is Mr. MacDonald
3 The report included a description of structural weakness (none)
The report included a description of hazardous conditions (none)
s The report was submitted to the Division on a quarterly basis
Files: C-81-028 Hydrology Sediment Pond Inspection Reports
C:\ WPDOCS\ICeenesburglSedPndlnspRptRvw4gt02.028.doc